This was the subject of a post this summer. Andrea Unger introduced us to TAPSE at EDE 3 Sun Peaks last year. Definitely seems to have some utility in that possible PE case when you’re just not sure about RV free wall contractility. See the video for Tom’s review of the article by Lobo et al. Being a research article, M-mode is used to generate precise measurements, but TAPSE can usually be “eyeballed” in most patients.